I am pretty anal when it comes to "closet" cleaning. I am extremely particular about categorizing each and every shelf, cupboard, hanger, bin. Crazy- you can trip on your way to the pantry, but when you open it- aah, perfection. This is how I am with my fridge as well. Each shelf has a specific purpose- specific. Don't put drinks anywhere except the top shelf. Don't put cheese anywhere except the top drawer, and so on.